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Row Number

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Many SQL engines allow row number to be generates on the fly to be included as a reference in a dataset, others (I'm looking at you Jet driver) don't provide this functionality. Having the ability to create a row number on the data as a dimension in Tableau provide a consistent approach to generating a row number and would give self blends more of the power of self joins by allowing access to the next or previous value without the granularity requirements of a table calculation lookup.

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